seethe

1[intransitive]to be extremely angry about something but try not to show other people how angry you aresynonymfumeShe seethed silently in the corner.seethe with somethingHe marched off, seething with frustration.seethe at somethingInwardly he was seething at this challenge to his authority.

2[intransitive]seethe (with something)(formal)(of a place)to be full of a lot of people or animals, especially when they are all moving aroundThe resort is seething with tourists all year round.He became caught up in a seething mass of arms and legs.